CN100403850C - Circular polarized wave positioning method applicable to TD-SCDMA network - Google Patents

Circular polarized wave positioning method applicable to TD-SCDMA network Download PDF

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CN100403850C
CN100403850C CN 200610054394 CN200610054394A CN100403850C CN 100403850 C CN100403850 C CN 100403850C CN 200610054394 CN200610054394 CN 200610054394 CN 200610054394 A CN200610054394 A CN 200610054394A CN 100403850 C CN100403850 C CN 100403850C
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signal strength
point
positioning
polarized wave
circularly polarized
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CN 200610054394
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CN1968499A (en
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刘兆宏
玮 叶
鹏 周
英 夏
李恭伟
葛君伟
袁正午
裵海英
邹永贵
鱼详训
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重庆邮电大学;韩国仁荷大学教产学协力团
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Abstract

本发明请求保护一种基于电磁波极化技术的室内定位方法,涉及无线定位技术。 The present invention claims a method of indoor positioning based on the electromagnetic wave polarization technique, to wireless location technology. 本发明通过在室内铺设少量发射点,向室内空间均匀发射圆极化电磁波,手机或其他移动终端通过加装匹配的极化天线便只接收发射点的直射信号的能量而屏蔽了大部分反射信号的能量,有效抑制了人流等动态环境的影响;利用室内各处接收到的直射信号的能量,建立信号强度数据库,在能接受3个发射点的信号的条件下,在覆盖范围内实现精确的室内定位。 The present invention is by laying a small amount of emission point in the room, the energy emitted uniformly circularly polarized wave, or other mobile terminal receives only the direct signal will be emitted through the installation point matching polarization antenna to the indoor space shield most of the reflected signal energy, effectively suppresses the influence of the flow and other dynamic environment; receiving chamber using the energy around the direct signal, the signal strength to establish a database, can accept signals at three points of emission conditions, accurate within the coverage area Indoor Positioning. 该系统可供只需要室内定位服务的用户单独使用,也可以基于其它无线通信网络,结合室外定位技术实现真正的无缝定位。 The system user need only for indoor positioning services used alone, may be based on other wireless communication networks, in conjunction with the outdoor positioning the real seamless positioning technology.

Description

可适用于TD-SCDMA网络的圆极化波定位方法技术领域本发明涉及无线通信技术领域,尤其是利用电磁波极化性质的无线定位技术。 TD-SCDMA network is applicable to circularly polarized wave location TECHNICAL FIELD The present invention relates to wireless communication technologies, and in particular the use of the polarization properties of electromagnetic waves wireless location technology. 背景技术目前广泛使用的GPS定位技术在室内因为接收不到卫星信号或者卫星信号太弱而无法应用,室内定位可以采纳的CELL-ID、 TDOA等技术却因定位精度太低而不能满足用户的需求。 BACKGROUND GPS positioning technology widely used because not receive satellite signals or satellite signals are too weak and can not be applied indoors, indoor positioning can be adopted CELL-ID, TDOA technology because of the positioning accuracy is too low to meet the needs of users . 基于无线局域网的定位方法实现时需要安装大量的第三方设备,安装和维护的代价都很昂贵,并且该技术环境影响较大,系统性能很不稳定,严重影响定位精度的进一步提高。 When you need to install the wireless LAN positioning method based on the realization of a large number of third-party equipment, installation and maintenance costs are very expensive, and the environmental impact of large technology, system performance is very unstable, serious impact on further improve the positioning accuracy. 发明内容本发明提出一种圆极化波室内定位方法:在室内铺设发射圆极化波的发射点,极化天线接收发射点的信号,利用其信号强度进行定位。 The present invention provides a circularly polarized wave indoor positioning method: laying indoor emission point emitting circularly polarized wave antenna reception signals polarized emission point, using its signal strength positioning. 因而减小了环境变化因素的影响,同时系统安装维护花费的代价小且定位稳定性高。 Thus reducing the impact of changes in environmental factors, while the cost of system installation and maintenance cost of small high positional stability. 本发明的技术方案是:位置服务器集成空间数据库、信号强度数据库、 通信功能模块、计算模块及数据反馈模块;在室内铺设发射圆极化波方向为正向的发射点,发射点发送圆极化波,安装在移动终端或与移动终端相连的辅助设备上的极化天线接收圆极化波在偶数次反射时的信号强度并将其送入信号强度数据库;系统对信号强度初始化,根据所需定位精度把室内空间划分为若干网格,测量网格中心对应发射点的信号强度,将其输入信号强度数据库;当移动终端接收到3个或者更多的发射点反射的信号时,用户终端发送定位请求到LBS; LBS指示用户终端将至少3个发射点及其基准点的圆极化波发送到位置服务器中;位置服务器利用地面基准点的圆极化波信号强度对发射点的圆极化波信号进行功率校正之后,利用最大似然匹配等方法在信号强度数据库进行 Aspect of the present invention are: spatial location server database integration, the signal strength database, the communication function module, a calculation module and a data feedback module; indoor laying direction of the circularly polarized wave is emitted forward emission point, the emission point transmits circularly polarized wave polarization antenna mounted on a mobile terminal or auxiliary device connected with the mobile terminal received signal strength circularly polarized wave is reflected at the even number and sends it to the signal strength database; system initialization signal strength, depending on the desired the positioning accuracy of the indoor space is divided into several grids, measuring the signal strength of the grid corresponding to the central emission point, the input signal strength database; when the mobile terminal receives signals transmitted three or more points of reflection, the user terminal transmits positioning request to the LBS; LBS user terminal sends an indication of at least three circular polarized wave transmitting point and a reference point to the location server; the location server using a circularly polarized wave of the signal strength of the ground reference point of the circularly polarized emission point after the wave power correction signal, using the maximum likelihood method for matching the signal strength database 询得到几组近似的匹配数据:计算模块调用匹配数据计算用户终端位置信息,得到定位结果,数据反馈模块将结果反馈给用户。 Inquiry obtain approximate matching data sets: the calculation module calculates the user data matches the calling terminal position information, the positioning result obtained, the result data is fed back to the user module. 当在其他通信网络(如TD-SCDMA)中使用该定位服务时,用户在辅助设备上发送定位请求;发射点及基准点的信息通过辅助设备传输给移动终端,并由核心网将上述信息传送到位置服务器。 When the positioning service using other communications networks (e.g., TD-SCDMA), the user sends a location request on the auxiliary device; transmitting point and the reference point information to the mobile terminal device through the secondary transfer, by the above-described information is transmitted to the core network to the location server. 极化天线可安装在移动终端上或者与移动端相连的辅助设备上。 Polarized antenna can be installed on the mobile terminal or auxiliary device connected to the mobile terminal. 本发明的有益效果是:利用圆极化定位系统,实现室内用户终端的精确定位,系统安装维护方便,定位稳定,从而为各种基于位置的服务提供准确的数据源。 Advantageous effects of the present invention are: the use of circularly polarized positioning system, precise positioning of the user terminal chamber, system installation and maintenance easy, stable positioning, so as to provide accurate data sources for a variety of location-based services. 附图说明图1独立使用极化波室内定位时的服务体系结构图2独立使用极化波定位的定位流程图图3在TD-SCDMA网络中使用极化波定位的定位流程图具体实施方式如图l所示,描述了独立使用极化波室内定位系统时的服务体系结构。 1 shows the architecture of FIG service independently when two independent polarization indoor positioning using the positioning location flowchart of FIG. 3 flowchart polarized wave polarization positioned using the positioning in the TD-SCDMA network DETAILED DESCRIPTION As As shown in Figure l, describes the architecture of the service independently of the polarization when the indoor localization system. 在室内铺设发射圆极化波的发射点,以及基准点,在独立使用本系统的时候, 发射点发射圆极化波,移动端采用蓝牙或无线局域网等无线通信方式,控制发射点发射不同频率的电磁波,通过区分电磁波的不同频率,或者发射点发射单频信号的码分复用等方式来区分每个发射点;移动终端装备与发射点匹配的极化天线并保证在室内的任何位置能收到至少3个发射点发射的信号, 同时移动终端集成基于定位的服务LBS (Location Based Service)和通信功能; 基准点装备极化天线同时集成通信功能;位置服务器集成空间数据库及信号强度数据库,同时集成通信功能模块、计算模块及其数据反馈模块。 Laying indoor emission point emitting a circularly polarized wave, and the reference point, when the separate use of the system, emission point emitting a circularly polarized wave, the mobile terminal using Bluetooth or wireless LAN wireless communication system, the control point emit different emission frequencies electromagnetic wave, by distinguishing between different frequencies of electromagnetic waves, or the emission point emitting a single frequency signal code division multiplexing, etc. to distinguish each transmission point; polarized antenna and the mobile terminal equipment and guarantee that the emission point can be at any position of the chamber receive at least three emission points transmitted signal, while the integrated mobile terminal based on the service LBS (location based service) positioning and communication functions; reference point while integrating communication equipment polarized antenna function; location server integration signal strength database and spatial database, Meanwhile integrated communication function module, and a data computing module feedback module. 当在其它网络环境中使用极化波室内定位服务时,如在GSM、 CDMA、 TD-SCDMA、 LAN等通信网络中使用本系统时,对发射点和基准点的基本要求与独立使用极化波室内定位时的配置一样;由于使用网络的限制,比如TD-SCDMA网络中移动端可能只具有通信功能,此时极化天线和LBS应用程序可以集成在辅助设备上,移动端及辅助设备之间可以通过RS-232等方式相互通信;位置服务器可以放在网络中的一个节点中,方便与移动端进行通信。 When using polarization indoor positioning services, such as the use of the system in the GSM, CDMA, TD-SCDMA, LAN and other communication networks, a basic requirement for launching point and the reference point of the polarized wave used independently in other network environments configuration when the same indoor location; limitations due to the use of the network, such as network TD-SCDMA mobile terminal may only have a communication function, and this time polarized antenna LBS application may be integrated on the auxiliary device, can be moved between the ends and auxiliary equipment via RS-232, etc. communicate with each other; the location server can be placed in a node in the network to facilitate communication with the mobile terminal. 如图2所示,描述了单独使用本系统进行室内定位时的定位处理流程图。 2, described positioning processing flowchart when used alone indoor positioning system. 首先是由用户终端发送定位请求信息到LBS,定位请求信息包括服务质量要求如响应时间等等;LBS指示移动端将发射点及其基准点的信息发送到位置服务器中,这些信息包括发射点及基准点的识别信息及其信号强度信息等等; 位置服务器收到上述信息后,经过功率校正,然后利用发射点的识别信息和校正后的信号强度信息在数据库中搜索到最匹配的几组数据,计算模块利用这几组数据通过计算得到最后定位结果,最终反馈给LBS并提供显示给用户。 First, the user terminal transmits the positioning request information to the LBS, the positioning request information includes quality of service requirements such as response time and the like; the LBS information indicating the mobile terminal transmits the transmission point and the reference point to the location server, the information includes transmission point and signal strength information and the identification information of the reference point and the like; the location server receives the above information, through the power calibration, then use the emission point identification information and signal strength information after the correction to the search in the database that best matches the data sets , the calculation module using these sets of data obtained by calculating the last location result to the LBS and ultimately provide feedback to the user. 如图3所示,描述了在其他网络(如TD-SCDMA)中使用极化波室内定位的流程图。 As shown in FIG. 3, a flowchart of polarization in another network (e.g., TD-SCDMA) positioned in the chamber. 用户发送定位请求到辅助设备的LBS;辅助设备上的极化天线获取发射点及其基准点的识别信息和信号强度等信息,并通过RS-232、无线等传输方式将这些信息传输到移动终端;移动终端通过Uu接口将信息传送到基站;基站通过Iu接口将信息传送到CN (CoreNetwork核心网);位置服务器可以放在CN的一个节点上面,启动位置服务器中的计算模块,经过匹配和计算后,得到移动终端位置信息,以及所在房间的空间数据等等反馈回辅助设备,辅助设备的LBS将其定位结果反馈给用户。 LBS user sends a location request to the secondary device; polarized antenna apparatus acquires information on the auxiliary signal strength and identification information transmission point and a reference point, and transmits this information to the mobile terminal through the RS-232, wireless transmission, etc. ; mobile terminal to the base station to transmit information via the Uu interface; the Iu interface to the base station transmit information to the CN (CoreNetwork core network); location server may be placed above a node CN, the location server to start calculation module, and matching the elapsed after the mobile terminal to obtain position information, and the space in the room where the fed back data and the like auxiliary devices, auxiliary equipment LBS its positioning result to the user. 初始化信号强度时将室内环境划分为一个一个的小网格,网格的大小可以根据定位所需精确度来确定;将每个网格的中心对应的发射点的信号强度的数据添加到空间数据库中。 The size of the initialization signal intensity is divided into small indoor environment of a grid of a grid may be determined according to the positioning accuracy required; adding data signal intensity of the emission point corresponding to the center of each grid to the spatial database in. 每个网格数据存储在数据库的信息如下表1所示:表1数据库存储方式网格ID 网格对应空间数据 发射点ID+对应信号强度 发射点ID+对应信号强度 发射点ID +对应信号强度001 001 -33dBm 002 陽52dBm 003 -44dBm002 001 -28dBm 002 -39dBm 003 -45dBm 当网络体系结构布置和信号初始化测量完毕之后,依照上文所述的定位流程,移动端将测量到的至少3个发射点的信号强度及其基准点的信号强度输入到位置服务器中;计算初始化时基准点的信号强度与实时的基准点的信号强度的比值,将这个比值乘以实时的3个发射点的信号强度值,即得到校正的发射点的信号强度;之后再利用最大似然匹配等方法在数据库中找到与校正后的发射点的信号强度最匹配的几组数据,将这些数搪输入到计算模块, 计算模块依据这几组数据与实际测量数据的近似程度,分配给这几组数据相应的权值,然后 Each mesh data stored in the information database shown in the following Table 1: Table 1 Database storage space mesh corresponding to the mesh ID ID + data transmission points corresponding to the signal intensity of the emitted signal strength points corresponding to ID + ID + emission point corresponding to the signal strength 001 001 -33dBm 002 male 52dBm 003 -44dBm002 001 -28dBm 002 -39dBm 003 -45dBm when the structural arrangement and network system initialization signal measurement is completed, in accordance with the location process described above, the mobile terminal compares the measured at least three emission points the signal strength and the signal strength input to the reference point location server; signal intensity ratio of the signal intensities when calculating the reference point and the real time initialization of the reference point, the signal strength value by the ratio of the real-time three emission points, the signal intensity of the emission points to obtain a corrected; after re maximum likelihood matching method to find several sets of data and the transmission point corrected signal strength of the best match in the database, these numbers lining is input to the calculation module the calculation module based on these sets of data and the actual degree of approximation of the measured data, the weights assigned to the respective data of these groups, and 算这几组数据对应的位置坐标的加权平均值,将其作为待求移动终端的位置坐标,并输出该移动终端的位置坐标,同时反馈给用户。 Operators of these groups of data corresponding to the weighted average of the position coordinates, the coordinate position to be required as a mobile terminal, and outputs the position coordinates of the mobile terminal, and feedback to the user. 本发明采用圆极化波定位方法,为室内移动终端用户提供精确的定位, 从而为各种基于位置的服务提供准确的数据源。 The present invention uses a circularly polarized wave positioning method to provide accurate positioning for indoor mobile terminal users, so as to provide accurate data sources for a variety of location-based services. 该系统可供只需要室内定位服务的用户单独使用,也可以基于其它无线通信网络,结合室外定位技术实现真正的无缝定位。 The system user need only for indoor positioning services used alone, may be based on other wireless communication networks, in conjunction with the outdoor positioning the real seamless positioning technology. 可以应用在百货公司、超市、停车场等等场合。 It can be used in department stores, supermarkets, car parks and so on occasion.

Claims (4)

1. 一种基于圆极化波的室内终端定位方法,位置服务器集成空间数据库、信号强度数据库、通信功能模块、计算模块及数据反馈模块,其特征在于:在室内铺设发射圆极化波的发射点及基准点;发射点发送圆极化波;安装在移动用户终端或与移动用户终端相连的辅助设备上的极化天线接收圆极化波在偶数次反射时的信号强度并将其送入信号强度数据库;系统对信号强度初始化;移动用户终端发送定位请求到LBS;LBS指示移动用户终端将至少3个发射点及其基准点的圆极化波发送到位置服务器中;位置服务器根据基准点的圆极化波信号强度对发射点的圆极化波信号做功率校正,并查询信号强度数据库,寻找匹配数据;计算模块调用信号强度数据库中的匹配数据计算移动用户终端位置信息;数据反馈模块将计算结果反馈给移动用户终端。 A method of indoor positioning terminal based on the circular polarization, spatial location server database integration, the signal strength database, the communication function module, a calculation module and a data feedback module, wherein: the laying of transmitting circularly polarized waves emitted indoors point and the reference point; emission point transmits circularly polarized waves; polarization antenna mounted on the auxiliary equipment or mobile user terminal and the mobile user terminal connected circularly polarized wave reception signal strength at the even number and sends it to the reflection signal strength database; system initialization signal strength; mobile user terminal sends a location request to the LBS; LBS mobile user terminal transmits an indication of at least three circular polarized wave transmitting point and a reference point to a location server; location server based on a reference point circularly polarized wave signal intensity of circularly polarized wave signals do transmit power correction point, the signal strength of the query and the database, looking for matching transactions; computing module call signal strength data in the database matching the calculated position information of the mobile user terminal; data feedback module the calculation result is fed back to the mobile user terminal.
2、 根据权利要求l所述的室内终端定位方法,其特征在于:发射点发射圆极化波的方向为正向。 2. The indoor terminal positioning method according to claim l, wherein: the emission point emitting direction of the circularly polarized wave is positive.
3、 根据权利要求l所述的室内终端定位方法,其特征在于:信号强度初始化过程包括:把室内空间划分为若干网格,测量网格中心对应发射点的信号强度,并将其添加到信号强度数据库中。 3. The indoor terminal positioning method according to claim l, wherein: the signal strength initialization process includes: the indoor space is divided into several grids, measuring the signal strength corresponding to the emission center of the grid point, and adds it to the signal strength database.
4、 根据权利要求3所述的室内终端定位方法,其特征在于:网格大小根据定位精度划分。 4. The indoor terminal positioning method according to claim 3, wherein: the grid size is divided according to the positioning accuracy.
CN 200610054394 2006-06-27 2006-06-27 Circular polarized wave positioning method applicable to TD-SCDMA network CN100403850C (en)

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CN1299468A (en) 1998-05-01 2001-06-13 诺瓦特尔有限公司 Method and apparatus for characterizing multipath interference in circularly polarized signals
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CN1299468A (en) 1998-05-01 2001-06-13 诺瓦特尔有限公司 Method and apparatus for characterizing multipath interference in circularly polarized signals
CN1576880A (en) 2003-06-27 2005-02-09 精工爱普生株式会社 Radio receiver and GPS receiver

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